After researching about Riverfront Park Boat Ramp in Kansas, it can be inferred that this boat ramp is a concrete ramp designed to enable boaters to launch their boats into the water easily. As per the latest information available, the boat ramp is 16 feet wide.

The Riverfront Park Boat Ramp services the Kansas River, which has a total length of around 148 miles. This river is a popular spot for fishing, boating, and other water-based activities.

Regarding the craft that are permitted on the water, it seems that there are no limitations on the type of boats that can be launched from this ramp. However, it is important to note that boaters should abide by all state and federal regulations, including safety equipment requirements and speed limits. Additionally, it is recommended to check for any specific waterway regulations or restrictions before heading out on the water.

Overall, Riverfront Park Boat Ramp in Kansas is a concrete ramp that is 16 feet wide and services the Kansas River. Boaters are permitted to launch any type of boat from this ramp, but should comply with all regulations and guidelines to ensure a safe and enjoyable experience on the water.